Everyday Science MCQs

5120 MCQs  (Page 72 of 512)

Sythetic insulin from pork was formed by which technique__________?
A. Parasitology
B. Social biological techniques
C. Biotechnology
D. Both a and c
Bacteria which grow either in the presence or absence of oxygen___________?
A. Aerobic bacteria
B. Anaerobic bacteria
C. Facultative bacteria
D. Microaerophilic
It is possible to date the rocks by comparing the amount of specific radioactive isotopes they contain. Which of the statement is correct in this respect:
A. Older sediment layers have equal amount of these reaioactive isotopes as that of the young ones
B. Older sediment layers have less amount of these reaioactive isotopes as that of the young ones.
C. Older sediment layers have greater amount of these radioactive isotopes as that of the young ones.
D. Older sediment layers did not have these radioactive isotopes
Reverse transcriptase is present in____________?
A. All rna viruses
B. All dna viruses
C. All retroviruses
D. All viruses
Destruction of all life forms is called___________?
A. Sterilization
B. Disinfection
C. Antisepsis
D. Preservation
Pox viruses are_________?
A. Rna non-enveloped
B. Rna enveloped
C. Dna non-enveloped
D. Dna enveloped